Food Cravings: Why They Hit, How to Ride Them Out, and When a Medicine Can Help

Hunger and craving feel similar in the moment, but they are different animals. Hunger builds slowly, makes almost any food appealing, and goes away once you have eaten. A craving arrives fast, wants one specific thing, and can show up an hour after a full meal.
That difference is the key to handling cravings. Hunger is a fuel signal and the answer is food. A craving is mostly a learned reward signal, shaped by habit, stress, sleep and surroundings, and it responds to a different set of tools.
Below are twenty tips grouped by what they target, followed by the medical causes worth ruling out and the one group of medicines that works directly on the craving itself.
🧠 Hunger or craving?
| Hunger | Craving | |
|---|---|---|
| Onset | Gradual, over hours | Sudden, often triggered by a sight, smell or mood |
| What satisfies it | Almost any food | One particular food, usually sweet, salty or fatty |
| Where you feel it | Stomach: emptiness, rumbling, low energy | Head: a picture of the food, a pull towards it |
| After eating | Goes away | May return, often with guilt |
| If you wait | Gets stronger | Peaks and fades, often within 10 to 20 minutes |
The last row is the most useful fact in this article. A craving behaves like a wave. If you can let it pass without acting, it usually drops off on its own, and each time that happens the next one tends to be a little weaker.
🔬 What drives cravings
The brain's reward system learns which foods deliver a quick hit of pleasure, and which situations predict them. Sugar with fat is the most powerful combination, which is why chocolate, pastries and ice cream top every craving survey. Over time, cues alone start the process: the time of day, the sofa, the coffee break, the supermarket checkout.
Several things turn the volume up:
- 😴 Short sleep raises the hunger hormone ghrelin, lowers the fullness hormone leptin, and makes high-calorie food look more rewarding
- 💢 Stress pushes towards comfort food, and eating it brings brief relief, which reinforces the habit
- ⏱️ Long gaps between meals leave you ravenous, and ravenous people rarely choose vegetables
- 🚫 Strict bans on a food can make it more interesting in the short term
- 📅 Hormonal changes before a period and in pregnancy
🍽️ Tips 1–4: set up your meals
Many cravings are really hunger in disguise, created by the way the day's eating is arranged.
- 1. Eat protein at breakfast
- Eggs, yoghurt, cottage cheese or fish in the morning are linked to less snacking later in the day, especially in the evening.
- 2. Do not go more than four to five hours without eating
- Regular meals prevent the steep drop that turns a mild wish for a biscuit into an urgent need for the whole packet.
- 3. Build meals around fibre
- Vegetables, beans, lentils and whole grains slow digestion and keep blood sugar steadier.
- 4. Include some fat
- Olive oil, nuts or avocado help meals feel finished. Very low-fat meals often lead to a sweet hunt an hour later.
🌊 Tips 5–9: in the moment
These are for the ten minutes when the craving is strongest.
| Tip | How it works |
|---|---|
| 5. Wait 15 minutes | Set a timer and do something else. You are not refusing the food, only postponing it. Often the wave passes |
| 6. Go for a brisk walk | In studies, a 15-minute walk reduced chocolate cravings and the amount eaten afterwards |
| 7. Name it | Say to yourself: this is a craving, it will peak and fall. Labelling it takes some of its power away |
| 8. Change the setting | Leave the kitchen, step outside, phone someone. Cravings are tied to places |
| 9. Brush your teeth or chew gum | A fresh-mint mouth makes food less appealing, and chewing keeps the mouth busy |
A glass of water is often suggested too. Thirst is sometimes mistaken for hunger, so it is worth trying, but on its own it rarely beats a real craving.
🏠 Tips 10–14: change the environment
Willpower is a poor long-term strategy because it has to win every single time. The environment only has to be set up once.
- 10. Do not keep the trigger food at home. If it takes a trip to the shop, most cravings pass before you get your shoes on.
- 11. Shop with a list, after eating. Hungry shoppers buy more of exactly the foods they crave.
- 12. Keep a ready alternative in sight. Fruit on the counter, cut vegetables at eye level in the fridge.
- 13. Serve portions, not packets. Put a portion in a bowl and put the packet away before you start.
- 14. Break the cue. If the evening sofa means snacks, change the routine: a walk, a bath, a different room.
😴 Tips 15–18: sleep, stress and habits
15. Protect your sleep. After a short night, people choose larger portions and more sugary food the next day. Seven hours or more is one of the most effective anti-craving measures there is, and it costs nothing.
16. Find another stress release. If food is your main way of coping, removing it without a replacement rarely works. Exercise, talking to someone and even ten minutes of slow breathing are real alternatives.
17. Eat slowly and without a screen. Meals eaten in front of the television tend to be larger and less satisfying, so the search for something extra starts sooner.
18. Cut back gradually, not to zero. Total bans make some people obsess. Eating a food less often, though, does reduce cravings for it over a few weeks. Many people do best with a planned small portion a few times a week instead of a daily fight.
📋 Tips 19–20: understand your pattern
19. Keep a two-week craving diary. Note the time, the food, where you were and how you felt. Patterns show up fast: the 4 pm slump, the stressful meeting, the night after little sleep. Once you can predict a craving, you can plan for it.
20. Look at your medicines. Several common medicines increase appetite and cravings. If cravings started or worsened with a new treatment, that is worth raising with your doctor rather than blaming your willpower. See the section below.
❌ What does not help
🔴 Liquorice is not a craving remedy. It is often recommended online, but regular liquorice raises blood pressure and can dangerously lower potassium, especially in people with heart disease or on blood pressure medicines or diuretics.
Other popular fixes have little behind them. Chromium, cinnamon and most "appetite control" supplements show small or inconsistent effects in trials. Chilli can slightly reduce appetite for a meal but not the desire for chocolate. Extreme detox or juice diets typically make cravings stronger once they end.
🩺 When cravings have a medical cause
| Cause | What it looks like |
|---|---|
| Low blood sugar in diabetes | A sudden, urgent need for sugar with shaking, sweating or a fast heartbeat, particularly on insulin or sulfonylurea tablets. This is a hypoglycaemia and needs sugar straight away |
| Iron deficiency | Strong cravings for ice, or for non-food things such as clay or starch. Ice craving is closely linked to low iron and often vanishes with treatment |
| Overactive thyroid | Big appetite with weight loss, a racing heart and heat intolerance |
| Pregnancy | Cravings are common and usually harmless; non-food cravings should be mentioned to the midwife |
| Premenstrual days | Predictable cravings in the week before a period |
| Depression | Some forms bring increased appetite and carbohydrate craving, along with low mood and heavy tiredness |
💊 Medicines that increase appetite
Among the most common are steroid tablets, certain antidepressants such as mirtazapine, several antipsychotics, including olanzapine and quetiapine, lithium, valproate, insulin, sulfonylureas and some older antihistamines. Cyproheptadine is actually prescribed in some countries to increase appetite. None of these should be stopped on your own. A doctor can often adjust the dose or switch to an alternative with less effect on weight.
🚩 When it is more than cravings
Regular episodes of eating a very large amount in a short time, with a sense of losing control, followed by distress, point to binge eating disorder. It is the most common eating disorder, affects men as well as women, and is very treatable, mainly with a specific form of talking therapy. If binges are followed by vomiting, laxatives or extreme exercise, that is bulimia, which needs specialist care. Both are covered in our guides to bulimia and eating disorders.
💊 Medicines that act on the craving itself
For people with obesity or overweight with a related health problem, who have not lost enough weight with diet and activity alone, some prescription medicines help. They work in quite different ways.
| Medicine | Effect on cravings | Availability here |
|---|---|---|
| Naltrexone with bupropion | Designed to act on the reward system that drives cravings and on the brain's appetite centre | Available as Lodonak BP (Naltrexone and bupropion) |
| GLP-1 medicines | Strongest overall reduction in appetite and constant thoughts about food | Not currently in our catalogue |
| Orlistat | Does not reduce cravings; it blocks absorption of part of the fat eaten | Available as Xenical (Orlistat) |
🧪 Naltrexone with bupropion: what to know
This combination pairs two medicines that have been used separately for years. Naltrexone blocks part of the reward response, and bupropion acts on the brain's appetite regulation. Together they are meant to make food less compelling rather than simply less available.
How it is started. The dose is built up over four weeks to reduce nausea, typically from one tablet in the morning in week one to two tablets twice a day from week four. Tablets are swallowed whole and should not be taken with a high-fat meal.
How success is judged. Twelve weeks after reaching the full dose, weight is checked. If less than 5 percent of starting weight has been lost, the medicine is usually stopped, because further benefit is unlikely.
🔴 Not suitable if you:
- have uncontrolled high blood pressure
- have epilepsy or a history of seizures, or have ever had bulimia or anorexia
- take opioid painkillers or opioid substitution treatment — naltrexone blocks them and can cause sudden withdrawal
- are stopping alcohol, sleeping tablets or anti-seizure medicines abruptly
- take an MAOI antidepressant, or stopped one within the last 14 days
- are pregnant or trying to conceive
Common side effects are nausea, constipation, headache, dizziness, dry mouth and trouble sleeping. Blood pressure and heart rate can rise and should be checked. As with other medicines containing bupropion, any low mood, agitation or thoughts of self-harm must be reported straight away.
Medicines work best alongside the habits above, not instead of them. Our guide to exercise and weight covers the activity side.
🚑 When to see a doctor
- Sudden sugar cravings with shaking or sweating if you have diabetes — treat as low blood sugar first
- Craving ice or non-food substances — check for iron deficiency
- Episodes of eating large amounts with loss of control
- Vomiting or using laxatives after eating
- Big appetite with weight loss, palpitations or heat intolerance
- Cravings that began with a new medicine
- Low mood alongside overeating
❓ Frequently asked questions
How long does a food craving last?
Most cravings peak and fade within about 10 to 20 minutes if you do not act on them. Setting a timer and doing something else, ideally something active, is one of the simplest ways to let the wave pass.
Why do I crave sweets after dinner?
Usually habit and cue rather than hunger: the brain has learned that the end of a meal means something sweet. Tiredness and a low-protein or very low-fat dinner make it stronger. Changing the after-dinner routine and not keeping sweets at home help most.
Do cravings mean my body needs something?
Rarely. Cravings for chocolate or crisps reflect habit, reward and mood, not a nutrient shortage. The clear exception is craving ice or non-food substances, which is strongly linked to iron deficiency.
Does lack of sleep cause cravings?
Yes. Short sleep raises the hunger hormone ghrelin, lowers the fullness hormone leptin, and makes high-calorie food more appealing. After a poor night most people choose larger and sweeter portions.
Is it better to ban foods I crave?
Total bans make some people obsess about the food. Eating it less often does reduce cravings over a few weeks. A planned small portion a few times a week works better for many people than a daily battle.
Is there a medicine for food cravings?
For people with obesity, naltrexone combined with bupropion is designed to act on the reward system behind cravings. GLP-1 medicines reduce appetite and food thoughts most strongly. Orlistat does not affect cravings. All are prescription medicines with specific conditions for use.
Who should not take naltrexone with bupropion?
People with uncontrolled high blood pressure, epilepsy, a history of bulimia or anorexia, those taking opioids, those abruptly stopping alcohol or sleeping tablets, anyone on an MAOI antidepressant, and pregnant women.
Can medicines cause cravings?
Yes. Steroids, some antidepressants such as mirtazapine, several antipsychotics, lithium, valproate, insulin and sulfonylureas commonly increase appetite. Do not stop them yourself; a doctor can often adjust the treatment.
Is liquorice good for sugar cravings?
No. Regular liquorice can raise blood pressure and lower potassium, which is dangerous for people with heart disease or on blood pressure medicines. It has no proven effect on cravings.
When are cravings a sign of binge eating disorder?
When there are regular episodes of eating a large amount in a short time with a feeling of losing control, followed by distress. It is common and very treatable, mainly with a specific form of talking therapy.
📑 Sources and editorial
- Research on food craving, reward and cue reactivity
- Studies of sleep restriction, appetite hormones and food choice
- Trials of brief exercise and craving intensity
- Meta-analyses of food cravings during weight-loss interventions
- Prescribing information for naltrexone and bupropion extended-release
- Guidance on pica and iron deficiency
- Safety information on liquorice and glycyrrhizin
- Related reading: exercise and weight, bulimia
- Related products: Lodonak BP (Naltrexone and bupropion), Xenical (Orlistat), weight loss category
- RXshop Editorial Team — reviewed by Daniel Kim, MD, Endocrinology
Medical Disclaimer: The information in this article is for educational and informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek guidance from a qualified healthcare provider with any questions you may have regarding a medical condition, and before starting, stopping or changing any medication.